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We recently purchased a ’42 self built cabin at 4,200 foot elevation on the west slopes of the Sierra Nevada Mountains. The house needs a lot of improvements including exterior wall insulation. The wall construction from exterior to interior is 1)cedar shingles, 2)1×12 diagonal pine sheathing, 3)2×6 studs @ 2′ 6″ O.C. with 2×2 horizontal nailers, 4)asphalted kraft paper, and 5)1×7 vertical V groove T & G knotty pine for all interior walls (and ceilings).
I was originally planning to remove the interior knotty pine on the exterior walls and add the insulation. This procedure is consistent with wishing to reduce extensive use of knotty pine. But how do I prevent moisture from penetrating the shingles and sheathing and wetting the insulation? If we blew in insulation would we have the same problem of moisture getting into the insulation? The exterior shingles are old but mostly in good condition. I didn’t want to replace the siding at this time, but is this necessary to apply a moisture/air barrier over the sheathing?
Any thoughts on how to insulate effectively at a reasonable cost would be appreciated.
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We recently purchased a '42 self built cabin at 4,200 foot elevation on the west slopes of the Sierra Nevada Mountains. The house needs a lot of improvements including exterior wall insulation. The wall construction from exterior to interior is 1)cedar shingles, 2)1x12 diagonal pine sheathing, 3)2x6 studs @ 2' 6" O.C. with 2x2 horizontal nailers, 4)asphalted kraft paper, and 5)1x7 vertical V groove T & G knotty pine for all interior walls (and ceilings).
I was originally planning to remove the interior knotty pine on the exterior walls and add the insulation. This procedure is consistent with wishing to reduce extensive use of knotty pine. But how do I prevent moisture from penetrating the shingles and sheathing and wetting the insulation? If we blew in insulation would we have the same problem of moisture getting into the insulation? The exterior shingles are old but mostly in good condition. I didn't want to replace the siding at this time, but is this necessary to apply a moisture/air barrier over the sheathing?
Any thoughts on how to insulate effectively at a reasonable cost would be appreciated.